1 /* BFD back-end for TMS320C30 coff binaries. 2 Copyright (C) 1998-2016 Free Software Foundation, Inc. 3 Contributed by Steven Haworth (steve (at) pm.cse.rmit.edu.au) 4 5 This file is part of BFD, the Binary File Descriptor library. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 20 02110-1301, USA. */ 21 22 #include "sysdep.h" 23 #include "bfd.h" 24 #include "libbfd.h" 25 #include "bfdlink.h" 26 #include "coff/tic30.h" 27 #include "coff/internal.h" 28 #include "libcoff.h" 29 30 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) 31 32 reloc_howto_type tic30_coff_howto_table[] = 33 { 34 HOWTO (R_TIC30_ABS16, 2, 1, 16, FALSE, 0, 0, NULL, 35 "16", FALSE, 0x0000FFFF, 0x0000FFFF, FALSE), 36 HOWTO (R_TIC30_ABS24, 2, 2, 24, FALSE, 8, complain_overflow_bitfield, NULL, 37 "24", FALSE, 0xFFFFFF00, 0xFFFFFF00, FALSE), 38 HOWTO (R_TIC30_LDP, 18, 0, 24, FALSE, 0, complain_overflow_bitfield, NULL, 39 "LDP", FALSE, 0x00FF0000, 0x000000FF, FALSE), 40 HOWTO (R_TIC30_ABS32, 2, 2, 32, FALSE, 0, complain_overflow_bitfield, NULL, 41 "32", FALSE, 0xFFFFFFFF, 0xFFFFFFFF, FALSE), 42 HOWTO (R_TIC30_PC16, 2, 1, 16, TRUE, 0, complain_overflow_signed, NULL, 43 "PCREL", FALSE, 0x0000FFFF, 0x0000FFFF, FALSE), 44 EMPTY_HOWTO (-1) 45 }; 46 47 #ifndef coff_bfd_reloc_type_lookup 48 #define coff_bfd_reloc_type_lookup tic30_coff_reloc_type_lookup 49 #define coff_bfd_reloc_name_lookup tic30_coff_reloc_name_lookup 50 51 /* For the case statement use the code values used in tc_gen_reloc to 52 map to the howto table entries that match those in both the aout 53 and coff implementations. */ 54 55 static reloc_howto_type * 56 tic30_coff_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 57 bfd_reloc_code_real_type code) 58 { 59 switch (code) 60 { 61 case BFD_RELOC_8: 62 case BFD_RELOC_TIC30_LDP: 63 return &tic30_coff_howto_table[2]; 64 case BFD_RELOC_16: 65 return &tic30_coff_howto_table[0]; 66 case BFD_RELOC_24: 67 return &tic30_coff_howto_table[1]; 68 case BFD_RELOC_16_PCREL: 69 return &tic30_coff_howto_table[4]; 70 case BFD_RELOC_32: 71 return &tic30_coff_howto_table[3]; 72 default: 73 return (reloc_howto_type *) NULL; 74 } 75 } 76 77 static reloc_howto_type * 78 tic30_coff_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 79 const char *r_name) 80 { 81 unsigned int i; 82 83 for (i = 0; 84 i < (sizeof (tic30_coff_howto_table) 85 / sizeof (tic30_coff_howto_table[0])); 86 i++) 87 if (tic30_coff_howto_table[i].name != NULL 88 && strcasecmp (tic30_coff_howto_table[i].name, r_name) == 0) 89 return &tic30_coff_howto_table[i]; 90 91 return NULL; 92 } 93 94 #endif 95 96 /* Turn a howto into a reloc number. */ 97 98 static int 99 coff_tic30_select_reloc (reloc_howto_type *howto) 100 { 101 return howto->type; 102 } 103 104 #define SELECT_RELOC(x,howto) x.r_type = coff_tic30_select_reloc(howto) 105 106 #define BADMAG(x) TIC30BADMAG(x) 107 #define TIC30 1 /* Customize coffcode.h */ 108 #define __A_MAGIC_SET__ 109 110 /* Code to swap in the reloc */ 111 #define SWAP_IN_RELOC_OFFSET H_GET_32 112 #define SWAP_OUT_RELOC_OFFSET H_PUT_32 113 #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) dst->r_stuff[0] = 'S'; \ 114 dst->r_stuff[1] = 'C'; 115 116 /* Code to turn a r_type into a howto ptr, uses the above howto table. */ 117 118 static void 119 rtype2howto (arelent *internal, struct internal_reloc *dst) 120 { 121 switch (dst->r_type) 122 { 123 case R_TIC30_ABS16: 124 internal->howto = &tic30_coff_howto_table[0]; 125 break; 126 case R_TIC30_ABS24: 127 internal->howto = &tic30_coff_howto_table[1]; 128 break; 129 case R_TIC30_ABS32: 130 internal->howto = &tic30_coff_howto_table[3]; 131 break; 132 case R_TIC30_LDP: 133 internal->howto = &tic30_coff_howto_table[2]; 134 break; 135 case R_TIC30_PC16: 136 internal->howto = &tic30_coff_howto_table[4]; 137 break; 138 default: 139 internal->howto = NULL; 140 break; 141 } 142 } 143 144 #define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry) 145 146 /* Perform any necessary magic to the addend in a reloc entry */ 147 148 #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ 149 cache_ptr->addend = ext_reloc.r_offset; 150 151 #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ 152 reloc_processing(relent, reloc, symbols, abfd, section) 153 154 static void 155 reloc_processing (arelent *relent, 156 struct internal_reloc *reloc, 157 asymbol **symbols, 158 bfd *abfd, 159 asection *section) 160 { 161 relent->address = reloc->r_vaddr; 162 rtype2howto (relent, reloc); 163 164 if (reloc->r_symndx > 0) 165 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; 166 else 167 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 168 169 relent->addend = reloc->r_offset; 170 relent->address -= section->vma; 171 } 172 173 #ifndef bfd_pe_print_pdata 174 #define bfd_pe_print_pdata NULL 175 #endif 176 177 #include "coffcode.h" 178 179 const bfd_target tic30_coff_vec = 180 { 181 "coff-tic30", /* name */ 182 bfd_target_coff_flavour, 183 BFD_ENDIAN_BIG, /* data byte order is big */ 184 BFD_ENDIAN_LITTLE, /* header byte order is little */ 185 186 (HAS_RELOC | EXEC_P | /* object flags */ 187 HAS_LINENO | HAS_DEBUG | 188 HAS_SYMS | HAS_LOCALS | WP_TEXT), 189 190 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ 191 '_', /* leading symbol underscore */ 192 '/', /* ar_pad_char */ 193 15, /* ar_max_namelen */ 194 0, /* match priority. */ 195 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 196 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 197 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */ 198 bfd_getl64, bfd_getl_signed_64, bfd_putl64, 199 bfd_getl32, bfd_getl_signed_32, bfd_putl32, 200 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ 201 202 {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ 203 bfd_generic_archive_p, _bfd_dummy_target}, 204 {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ 205 bfd_false}, 206 {bfd_false, coff_write_object_contents, /* bfd_write_contents */ 207 _bfd_write_archive_contents, bfd_false}, 208 209 BFD_JUMP_TABLE_GENERIC (coff), 210 BFD_JUMP_TABLE_COPY (coff), 211 BFD_JUMP_TABLE_CORE (_bfd_nocore), 212 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), 213 BFD_JUMP_TABLE_SYMBOLS (coff), 214 BFD_JUMP_TABLE_RELOCS (coff), 215 BFD_JUMP_TABLE_WRITE (coff), 216 BFD_JUMP_TABLE_LINK (coff), 217 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 218 219 NULL, 220 221 COFF_SWAP_TABLE 222 }; 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